MAESTRO 4.0 Software Tasks

NEW!: Electrically Evoked Auditory Brainstem Response (EABR)With the addition of the new EABR task, it is now possible to measure and record the response of the entire auditory pathway to stimulation from the implant. EABR recordings can be used to determine the best placement of an Auditory Brainstem Implant during surgery, and they can also provide interesting information on the functioning of the whole auditory pathway. The MAESTRO System Software 4.0 EABR parameters can be adjusted to facilitate recording of early, middle and late electrical potentials. To obtain measurements with the EABR task, it is also necessary to use a separate neurodiagnostic computer with a trigger input, along with scalp recording electrodes.

NEW!: Audiogram TaskMAESTRO System Software 4.0 features a new tool for clinicians who fit the DUET 2 audio processor for patients who receive devices for Electric and Acoustic Stimulation (EAS). The new audiogram task allows the clinician to enter the patient’s hearing threshold data for fitting the acoustic component of the DUET 2.

NEW!: Acoustic Fitting Task for DUET 2The acoustic fitting task supports software fitting of the acoustic component of the DUET 2 audio processor, used with EAS recipients. This task uses data from the new audiogram task to calculate the fitting according to the recommended MED-EL fitting protocol for EAS patients. In addition, the clinician has the option of adjusting the four acoustic fitting parameters of the DUET 2 either manually (using trimmers on the processor) or directly through the software. The acoustic fitting task can communicate the fitting changes directly to the DUET 2 via the HIPRO interface.

Impedance and Field Telemetry (IFT)
Telemetry measurements with an implant can be used to assist professionals in confirming the correct functioning of the implant. These measurements can provide additional information that may be useful for programming the external audio processor.

In telemetry measurements with the CONCERTO, SONATA, PULSAR, or COMBI 40+ and COMBI 40 implants, voltages on electrode pairs (channels) are measured at the end of the second phase of biphasic stimulation pulses. The pulses used are qualitatively identical to those used in the normal stimulation mode of the implant.

Electrically Evoked Stapedius Reflex Threshold (ESRT)
The stapedius reflex is triggered in individuals with normal hearing by a sound level that would typically be perceived as loud, which activates the stapedius muscle via the auditory nerve. For many CI recipients, the same reflex pathway can be activated by the electrical stimulus delivered by the implant. Moreover, the level at which the reflex is activated is highly correlated with fitting levels and so provides an objective measure that can aid programming.

Auditory Nerve Response Telemetry (ART™)MED-EL offers three implantable devices that are capable of recording compound action potentials - small voltage changes that are created by the auditory nerve when it transmits a signal to the brainstem. The measurement is done a few microseconds after the end of a stimulation pulse. The recorded signal is called the Evoked Compound Action Potential (ECAP or EAP) of the auditory nerve. It has an amplitude of about 0.01-2mV and takes place within roughly one millisecond after the stimulation pulse. Due to these very short, small response levels, special artifact reduction methods are used to enhance viewing of the nerve response.

The products described on this professionals website are subject to regulatory approval prior to marketing in your market; some features may be currently unavailable or not for sale by MED-EL in your region. Please check with your local MED-EL representative for product availability.

Product Disclaimer

The products described on this professionals website are subject to regulatory approval prior to marketing in your market; some features may be currently unavailable or not for sale by MED-EL in your region. Please check with your local MED-EL representative for product availability.